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Method and mobile phone for filtering out ambient sound by pattern recognition

A pattern recognition and ambient sound technology, applied in the field of sound filtering, can solve problems such as difficult microphones and unsatisfactory effects

Inactive Publication Date: 2011-11-30
HONG FU JIN PRECISION IND (SHENZHEN) CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The problem is that the volume of the mobile phone is getting smaller and smaller, and the voice of the user is easily collected by the additional microphone, which makes the effect of filtering the ambient sound unsatisfactory. difficulty

Method used

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  • Method and mobile phone for filtering out ambient sound by pattern recognition
  • Method and mobile phone for filtering out ambient sound by pattern recognition
  • Method and mobile phone for filtering out ambient sound by pattern recognition

Examples

Experimental program
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Embodiment Construction

[0020] Such as figure 1 Shown is the structural block diagram of the mobile phone hardware. The mobile phone includes: a microphone 101 , an analog-to-digital converter 103 and a processing unit 100 connected in series, and the processing unit 100 is further connected in series with a codec unit 105 , a radio frequency transceiver unit 107 and an antenna 108 . The microphone 101 collects sound, including ambient sound, speech, or a mixed signal of ambient sound and speech (hereinafter referred to as call speech), and generates an analog sound signal. The analog-to-digital converter 103 converts the analog voice signal into a digital voice signal and sends it to the processing unit 100 . The digital voice signal is encoded by the codec unit 105 and modulated by the radio frequency transceiver unit 107 and sent to the communication network through the antenna 108 . The signal received by the antenna 108 is demodulated by the radio frequency transceiver unit 107 , and then dec...

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Abstract

Provided is a mobile phone for filtering out ambient sound through pattern recognition. The mobile phone includes: an environmental mode selection module, which selects the environmental mode; a sampling module, which samples the environmental sound to obtain a sampling signal; an analysis module, which determines the environmental sound characteristics of each analysis cycle; a filter The removal parameter determination module determines the filtering parameters; a filtering module, which filters out the ambient sound in the mobile phone conversation according to the filtering parameters; and an environmental mode recording module, which records the current corresponding filtering of the environmental mode parameter. The invention also provides a method for filtering out ambient sound through pattern recognition. By using the mobile phone and the method, the influence of the ambient sound on the conversation can be effectively reduced to improve the conversation quality.

Description

technical field [0001] The invention relates to a sound filtering method and a mobile phone, in particular to a method and a mobile phone for filtering out environmental sounds in a mobile phone call. Background technique [0002] In recent years, with the rapid popularization of mobile phones, it has become a must-have item in people's daily life and has brought great convenience to people's daily life. However, when people use mobile phones, they will always be troubled by ambient sound, especially in occasions where ambient sound is unavoidable, such as in shopping malls, restaurants, etc. Therefore, how to effectively filter out the ambient sound so that the mobile phone microphone can accurately collect the user's voice information without interference has become an urgent problem to be solved. The following solution to this problem has appeared in the prior art: by adding a secondary microphone, the microphone is placed on the back of the mobile phone and the sound co...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W88/02H04B1/10G10L21/02H04B15/00G10L21/0208H04M1/72433H04M1/72454
Inventor 翁世芳陆欣王义龙
Owner HONG FU JIN PRECISION IND (SHENZHEN) CO LTD